Parallel-bar bumper



Jam.. 9, 1923., 4 1,111,7@5

VV. G. COX.

PARALLEL BAR BUMPER.

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Wi GA COX.

PARALLEL BAR BUMPLR.

FILED OCT4 LAL 6 lftatentetll llana t ttt 'WLLIAM G. COX. OF CLEVELAND,OHIO. ASSIGNOR TO 003i: BRASS MANUFACTURNG COMPANY, OF ALBANY. NEW YORK.A. CORPORATION OIF YORK.

PARALLJEL-BAR BUMPER.

Application filed October 25, 1922.

lic it known that l. 'iLLlAn (i. (`ox. a citizen of the' Vuited States,residing at cleveland. in the county of (`uyahoga and State of Ohio.have invented certain new and useful Improvements in Parallel-liarmaderwider or narrower vertically to c onform to, ditlerent conditions andments in different vehiclesjkor ,i the demands. preferences :forrequn'emcnts cxacted by dealers or the ultimate user.`

ln the drawings accomlmnyiug this application Fig. 1 is a front view ofmy improved parallel bar bumper mounted at the front eud of anautonuibile. and Fig, Q is a top plan view thereof. partly in section.Fig. 3 is a perspective view of an impact bar yand Fig. 4 is a similarview of the supporting bar. lfig. 5 is a perspective view of one of thevertical straps or plates separated from`the supporting bar. and Fig. (iis a perspective view of a carriage bolt used to detachably unite thebumper parts together. Fig. 7 is a side elevationvof the double-barbumper shown in lfig. l. and ltig. t, is a vertical section of thebumper alone on line 8-8 of Fig. Yl. perspective view of the supportingbar without the detachable vertical plates. and Fig. l() is avperspective view of a single impact baas it appears detached from saidrear bar. ltigs. 1l. 12 and 13 are perspective views of double bar,triple bar and quadruple bar impact units, respectively, and Figs. 14,15 and 16 are perspective views of the straps or plates used to producethese respective impact units.

rl`he. present bumper is particularly designed to eliminate loops andsimilar re verse bends, the formation of eyes, and other involvedbending 'operations either slow or dilicult of operation of whichrequire the use of expensive dies and machines. 'lhus 1n maklng thebumper a rear Serial No. 596,720.

bar E2 is cut to a given length from a straight flat strip of steel, andthree round bolt openings 3 are punched therein, one at the middle ofthe bar and one relatively near each end thereof. The bar is also bowedoutwardly at its middle 4 and the opposite ends are curved forwardly andthence rearwardlv to provide short diverging or slanting extremities 5having flat faces in which thev openings il are located. lhe next stepin operation is to provide the complementar \v fiat pieces or plates (ihaving a plurality of bolt openings therein. preferably one squareopening 7 mid-length thereof and one or more round openings 8 in therespective halves ot' each piece at equi-distant places from the centralsquare opening 7..

'Ihe pieces or plates G are relatively narrow and long with the openingslocatedfon thc longitudinal median line in the flat face thereof, andthese pieces may be made of the same bar stock as bar 2. ln constructionthe. bumper. corresiionding pieces 6 are detachably bolted to the flatfront face of bar 2, one bolt at its middle and one at each end `wherethe bolt holes 3 are situated,l

using short carriage bolts 9, nuts o. and lock washers vu. for thatpurpose. see FigsQ and t. The bolts are inserted through the middleopening 't' in tlfe short pieces ti and when the three pieces areclamped in place they extend parallelly and vertically across horizontalbar 2 with the opposite halves thereof projecting equal distances aboveand below the bar. and with the two flat pieces 6 attached to thediverging extremities 5 of the horizontal bar obliquelv positioned inrespect to the front tlat face of the middle piece G. rthis relationshipof parts permits two or more tannplementary impact bars 10 havingslightly curved end portions 10 to be. detachably secured horizontallyand parallelly in spaced relation upon the projecting ends of the shortcomplementary pieces 6. using complementary bolts. nuts and lockingwashers such as described. rlhe three openings 12 in each impact bar l0are preferably square to' eceive the square shank of the carriage b lt.,and when the parallel impact bars l() are bolted to the pieces G suchparts form a rectangular skelto bar 2 independently of horizontal bars10. Thus it is feasible to removeI either one or both ot the impactbai's lt) .without removing' the vertical pieces or remove the twoimpact bars and the three vertical pieces jointlY from the rearSupportingI bar 2. A. wrench is the .only tool required to accomplishthe assembly and disassembtv of they separable bumper. and it is asimple matter to convert the bumper. l\loreover, by Silbstitutingrlonger pieces (3 for the short pieces t3. a three bar bumper. or a fourbar bumper ma v be created. This is illustrated on sheet .2 ot' thedrawings. wherein Fig'. 9 illustrates the rear supporting' bar 2. andFig. l() a single impact bar lt). B v merel)v usiner the bolts. nuts andwashers. the single bar 1.() ma \v be bolted to bar 2 to produce abumper with a single narrow impact tace, Il v using three short piecest5 such as shown in Figlll two impact bars lll---ltl ma)Y be securedthereto to produce a wider impact frame which may be detachablv boltedto bar 2 instead ot' a single impactV bar. By employme' three longerpieces CW. sce Fig. 15. a still wider impact trarne composed of threeimpact bars 1t) ma)v be created and detachabl \v bolted to the rear barQ. and in Fin". lll. l show a four bar impact Ytrame which ma)Y beconstructed b v bolting tour bai's 10 to three lon;r complementarv bars(3" such as shown in Fic'. itl.

rllhe bumper may be attached to a vehicle in any suitable or well knownwav. for eX- ample, a pair of? brackets l ma'v be bolted to the chassisframe t and clamping dcvices l) used to secure the rear barhorizontall)y in place at the front side ot' said brackets as shown inFig. Q. In case of a severe collision or impact it frequently occursthat the bumper absorbs the shock by yielding or surrendering to Such anextent in some part thereof that one or more of the bars will be badlybent or even broken.' This is parti)7 the function of a bumper as it isbetter to injure the bumper than the zar, and therefore, the presentbumper is;

constructed as described to permitl a bent or broken part to be easilyremoved and repaired or replaced at a small cost' and to permit a changeor alteration to be ell'ected bv unskilled persons merel)v by the aidole wrench. Thus. roadside repairs are not onl v POSSble but feasible,especially as e\'cr \'one ot the bumper parts is olf simple lorm audeasil)Y repaired and handled.

lVhat l claim, is:

l. A multiple har bumper. l'or a vehicle. comprising a horizontal springbar havingl reverselv-inclincd (lat. extremities. separate tlat piecesvertically allixed llat-wise at their middle to said inclinedextremities. and pai'- allel spring' bai's having reversehv-inclinedextremities allixed [lat-wise at their oppoA site inclined ends to saidseparate vertical pieces.

2. A multiple bar buinpci' tor a vehicle. comprising' a horizontalspring' bar having' diverg'ing' extremities provided with bolt openings`separate tlat metal pieces detachably bolted at their middle verticali)vto said diverging extremities, and a number ol' par allel spring impactbars havingl divcreinlc` end portions imlependentl)v secured to saidvertical pieces and separabl)y detachable therefrom.

Il. separable bar bumper l`or a vchiclc. comprising a horizontal springbar having bolt openings at opposite ends thereol'. com plementar)v tlatpieces having spaced bolt openings therein. bolts and nuts and lockwashers adapted to secure said pieces at their middle in a verticalposition upon opposite ends ot said bar. a number ol' straight steelbars havingV bolt openings at their opposite ends. and bolts and nutsand lock washers adapted to detachablv fasten said steel bai'sindependcntlv inparallcl spaced relation upon said vertical piecesequi-distantl)v above and below the middle thereof.

In testimony whereof l allix mv signature hereto.

